Signal



R. F. STEWART.

SIGNAL.

I APPLICATION FILED SEPT. 15, 1919- 1,371,127. Patented Mar. 8, 1921.

3 SHEETS-SHEET I.

awe/whom WWW R. F. STEWART.

SIGNAL.

APPLICATION FILED SEPT,1 5. 1919.

1,371,127, Patented Mal-8,1921.

3 SHEETS-SHEET 2.

R. F. STEWART.

SIGNAL.

APPLICATION FILED SEPT. 15. I9I9.

1,371,127, Patented MIT. 23, 1921.

3 SHEETSSHEET 3.

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Nnluus FEYERS. Inc. LlIMlL. WAsnmcIou D C PATENT OFFICE.

ROBERT FRANCIS STEWART, OF SIOUX LOOKOUT, ONTARIO, CANADA.

SIGNAL.

Application filed September 15, 1919.

T 0 all whom it may concern:

Be it known that I, ROBERT F. STEWART, a citizen of Canada, residing atSioux Lookout, in the Province of Ontario and Dominion of Canada, haveinvented new and useful Improvements in Signals, of which the followingis a specification.

The present invention has reference to a signaling device forlocomotives.

The improvement is in the nature of a classification signal as the samedisplays a white flag for day or a white light for night to denote anextra train, while a green flag for day and a green light for night isdisplayed to denote a section of a regular train or how one train isrunning on the time of a regular train.

The object of the invention is to produce a signaling device of thischaracter which shall be of an extremely simple construction and whichmay be operated from the cab of the engine.

Other objects and advantages will present themselves as the nature ofthe invention is better understood. reference being had to theaccompanying drawings in which there is illustrated a simple andsatisfactory embodiment of the improvement reduced to practice, it beingunderstood, however, that the nature of the invention is such as torender the same susceptible to various modifications, all of whichfalling within the scope of what is claimed.

In the drawings Figure 1 is a side elevation of a locomotive providedwith the improvement, parts being broken away.

Fig. 2 is an elevation of the improvement on an enlarged scale.

Fig. 3 is an end elevation with the lamps removed.

Fig. 4 is a top plan view of the improvement.

Fig. 5 is a longitudinal sectional view approximately on the line 5-5 ofFig. 4.

Fig. 6 is a detail sectional view through the front of the locomotivecab, illustrating.

the arrangement of the operating levers and the method of locking thesame to hold one of the signals in signaling position.

Fig. 7 is a diagrammatic view of the electric wiring.

To the side of a locomotive 10 there is secured the casin 11 of myimproved classification signal. Preferably the casing 11 is bolted orotherwise connected to the hand Specification of Letters Patent.

Patented Mar. 8, 1921.

Serial No. 324,005.

rail 12 as well as to the boiler of the locomotive.

The casing 11 is preferably constructed of two parallel rectangularplates, connected together by suitable bolts 13 having their threadedends engaged by nuts 14 and the body portion of the bolts between theplates constituting the casing are received in tubular sleeves 15. Thesleeves contacting with the inner faces of the plates hold the sameproperly spaced, and locking means of any desired construction may beemployed for holding the nuts on the bolts. Passing through the platesadjacent to the upper and outer corner of the casing is a pivot memberpreferably in the nature of a bolt 16 which has its threaded endsengaged by nuts 17 which are locked to the bolts in any desired orpreferred manner. The pivot member 16 may, if desired, have its portionreceived between the plates of the housing surrounded by a sleeve, andthe said member 16 provides an axle for bearing members 18 formed adjacent to the inner ends of the signal arms. Each of the signal arms issimilarly constructed, but for distinction the same are designated bythe numerals 19 and 20 respectively. The arms 19 and 20 are formed froma single strip of suitable material, metal preferred, and are, adjacenttheir inner ends given a half twist upon themselves so that theflattened portions thereof, indicated by the numerals 21 are at alltimes received in the casing 11. These flat portions are provided withthe bearings 18, while the straight portions 22 of the said arms havesecured thereto signal plates 23 and 24 respectively. The plate 23 iscolored green while the plate 24 is white. The portions 21 of the signalarms, adjacent to the ends thereof are formed with slots 25 and throughthese slots pass rods 26 and 27 respectively, the inner ends of the saidrods being headed as at 28, and the inner edges of the said heads arepreferably beveled at the corners thereof to provide the inner andactive faces of the heads with pointed portions 29. The heads are of alength approximately equaling the length of the slots 25 so that byturning the rods to bring the heads in alinement with the slots the saidheads may be passed through the slots, and thus removed from the signalarms. In operative position, the heads are arranged transversely of theslots. The rods 27 are guided through suitable bearings 30 in the rearof the casing,

and the said rods have their ends which project through the rear of thecasing coupled to additional rods, the last mentioned rod sectionshaving their ends headed, as at 31, and the said rods pass throughsuitable openings 32 in the front wall 33 of the engine cab 34. Each ofthe heads 31 is provided with an opening 35 that serves as a finger holdfor the operator, and in addition to this, each of the rods, at asuitable distance away from its head is provided with a transverseopening 36. The head of the rod which operates the white signal has theword l/Vhite imprinted thereon and the other rod which operates thegreen signal has the word Green imprinted on the head thereof. Wheneither of the signals is to be operated the operating rod therefor ispulled inward of the cab until the opening 36 is brought to aline withthe inner face of the cab wall 33. Suspended from the said inner face ofthe cab wall by means of a flexible element such as a chain 37 is a pin38, and this pin is inserted through the opening 36, and in this mannerthe signal is held in operative position. It will be apparent that arelease of the rod will permit of the signal to drop by gravity into thecasing.

In addition to the signals above described, it is necessary thatilluminative signals be provided in order that proper signaling can takeplace at night, and to accomplish this I attach at the front of thecasing 12 in any desired or preferred manner a lamp box 39. This box isdivided into an upper and a lower compartment, the upper compartmenthaving an outer trans parent casing which is green in color and which isdesignated by the numeral 40. The casing 40 is designed to transmit therays from the electric lamp bulb 41 therein through both the front andouter side of the said casing. The lower compartment has a transparentcasing 42 which is white, so that white rays from the lamp bulb 43 willpass therethrough. The lamp bulbs 41 and 43 are in circuit with wiresconnected with the head light circuit, as illustrated in Fig. 7 of thedrawings and are also connected to a switch comprising contact members44 and 45 that are arranged in a suitable box 46 secured at the frontend and at the top of the casing 12. The contact member 45 may beslidable, being spring influenced in an outward direction of the box 46,and the slidable contact members 45 are in the path of engagement withthe respective signal arms, and in this manner when either of the signalarms are brought to signaling position one of the lamps will beilluminated. If desired, one of the contacts for the switch may becarried by the signal arms.

arms of suiiicient weight to normally swing I the arms and retain thesignal in the easing, slidable operating rods for the offset end of eachof the arms passing through openings in the cab of the locomotive, saidarms having their ends headed, the said heads provided with fingeropenings and the said rods a distance from the heads thereof each havinga transverse opening,

said heads designed to abut with the wall of the cab when the signalsare in nonsignaling position and are arranged in the casing, and aflexibly supported pin designed to pass through the opening in either ofthe rods and to contact with the wall of the cab for holding either ofthe signals in signaling position, after the rod has been pulledlongitudinally to bring the said signal to signaling position. v

2. In a classification signal for locomotives, a casing having open endsand an open top secured to one side of the locomotive, two oppositelydisposed arms pivoted in the casing adjacent to one end thereof and nearthe top of the casing, each of said arms being twisted upon itselfadjacent to the inner end thereof and said inner end offset and providedwith a slot, each of said arms having attached to the outer end thereofa signal which is of suflicient weight to normally swing the arm toretain the signal in the casing, rods guided through hearings in thecasing and passing through openings in the front wall of the cab of thelocomotive, said rods having their outer ends provided with lateralextensions forming heads the inner edges of which being V-shaped and thesaid ends contacting with the angle ends of the arms, the opposite endsof the rods being enlarged to provide heads desi ned to contact with thewall of the cab to limit the outward movement of the said rods, theheads of the respective rods having imprinted thereon the color of thesignal to which they are connected, means for locking the rods when thesignals are brought to signaling position.

In testi ony whereof, I aflix my si nature.

no ERT FRANCIS srnwiin'r.

